Warp stop-motion.



J. REGAN.

WARP STOP MOTION. APPLICATION mpnnnnu. 2a. 1909.

QW i/bwe/abm 777931100. I n/ @ga/nn Mm $28M I UNITED, STATES PATENTorrron. I Q

roma BEGAN, on NEW :snnronn, MAssAo usErrs, ASSIGNOB, T0 cnoMr'roN asKnowLEs oom WORKS, A CORPORATE-9N or MASSACHUSETTS.

wan]? STOP-MOTION.

Specification of Letters Patent. Application filed December 23, 1909.

Patented Apr. 4, 1911. Serial No. 534,610.

To elleuhom it may concern:

Be it known thatI, Jot-IN REGAN, a citizen ofthe ,United States,residing at New Bed- -f ord,,in= ,the county of Bristol and State ofMassachusetts, have invented certain new .andxuseful Improvements inWarp Stoplldo tions, of wh ch the following is a specification a Myinvention relates to warp stop mot1ons,. andparticularly to a mechanicalwarp stop motionof the class in which there are two end frames,connected by two or more bars extending in the direction 01 the width of.the.loom, which end frames and bars are removable and adapted to belifted out of the loom, and in which two or more sets of drop devices,consisting of thin metal blades with open. end slots 'in their lowerportion,

sand. elongated/closed slots in their upper portion, are used, the warptltireads passing through the open end slots in their lower portion, andthe drop devices supported on said warp threads, and arodor wire passing thronghthc elongated slot in the upper part of the drop devices,there being one Wire or rod for each set of drop devices, said rod orwire. acting to limit the downward movement of a drop device, in case ofthe breaking of a warp thread on which the drop de'vice is supported.

In the class of warp stop motions above referred to, in case of a loomof considerable width, it is necessary to use one or more braces orsupports'for the wires or rods extending through the openings in theupper parts of the drop devices to hold them in proper alinement. Thesebraces or supports are rigidly attached to stationary bars Ittached tothe'loom frame, and are not removable with the dropdevice.

In the assembling tion of the class referred to, it is the ordinarypractice to place the drop devices on the warp threads, and then toinsert a rod or wire through the slot or opening in the upper portion ofeach drop device in a set, and then to insert the ends of the rod orwire into an opening in the removable end frames, to attach it thereto.The rods or wires passing through the upper part of the drop devicesextend in slots or recesses 1n the upper part of the supports or bracesintermediate the ends of the warp stop motion, and there is a liabilityof said rods or of the warp stop mo- 'wi res being accidentally, orintentionally removed 'from these openings or recesses and cause adisarrangement of thc drop devices.

The object of my invention is to provide means for preventing theaccidental. or intentional removal of the wires or rods from the bracesor supports in the class of warp stop motions referred to, and at thesome time to allow the ready removal of said rods or wires from theslots or recesses in said supports or braces, when desired, and thewithdrawal of said wires or rods, by disconnecting their ends from theend frames, without removing the end frames or the drops on the warpthreads. At the same time the wires or rods may be removed with the endframes and with the drop devices sup iorted on said wires or rods.

3 y invention consists more particularly in combining with the braces orsupports, intermediate the ends of the warp stop motion, a removablecap, which may be connected with, or disconnected from the brace '01.support, and which acts to hold the wires or rods in position in theopenings in the braces or supports, all as will be hereinafter fullydescribed. y

I have shown in the drawing a detached portion of a four bank mechanicalwarp stop motion with my improvements applied thereto, sullicicnt toenable those skilled in the art to understand the construction andoperation thereof.

Referring to the drawing:F1gure 1 1s a front view of one end of amechanical warp stop motion, looking in the direction of arrow a, Fig.3. Fig. 2 is a section, on line 2, 2, Fig. 1, looking in the dlrectionof arrow 6, same figure. Fig. 3 is a plan new of the parts shown in Fig.1, look1ng 1n the dungtion of arrow 0, same figure, and, Fig. 4 1s asection, on line 4., 4, Fig. 1, looking in the direction of arrow cl,same figure, and showing a brace and the removable cap.

In the accompanying drawlng, 1 1s the end frame of the warp stop motion,havlng the boss 1 thereon, into which extends a rod 2, secured in saidboss by a set screw 3; said rod 2 is secured to some stationary part ofthe loom and acts to rigidly support the warp stop motion frame andother parts. There is a corresponding frame 1 on the opposite end of thewarp stop motion, not shown, which is also supported in the same way.

Extending between the two end frames are the transverse bars 4, in thisinstance six. 1n number, whlch are secured to the end.

' '8, to stop the loom, through intermediate connections, not" shown, inthe usual way. The drop devices 6 are in this instance arranged 1n fourseries, and have in their up per portions elongated slots 6, throughwhich-the rods or'wires'9 extend. The rods or wires 9 are secured ateach. end to an end piece 10. The end piece 10 is removably held at eachend of the warp stop motion between the transverse bars 4, see Fig; 2.

Two transverse guide bars 11 are attached to'the end pieces'10,.to beremoved therewi.th.-

A brace or support 12 has side extensions 12 thereon,whichhave slots 12therein, see

Fig. 1, through which'extend screws 13 by which said brace or support 12is secured to the transverse bars 4. The brace or support 12 has openend slots in its upper edge, see Fig.

4, to loosely receive the rods or wires 9. The

rods of wires 9 are retained in place in the open end slots 12 in theupper edge of the brace or support 12, in this instance bya bar or cap14, which has one end hinged or pivotally mounted on a pin 15, and hasits other end slotted to receive a bolt 16, which is pivotally mountedat its lower end on a pin 17, and carries on its threaded end a thumbnut 18, which acts to secure the cap 14 in place.

By means of the cap 14, combined with the brace or support 12, the rodsor wires 9 are held in position, and in case it is desired to remove thewires, the cap 14 is raised, as shown. by broken lines in Fig. v4. TheWires 9 are then disconnected at their ends and drawn out from the slots6' in the upper ends of the drop devices 6.

In assembling the warp stop motion, the drop devices maybe first placedupon the wires or rods 9, and then the cap 14, on the brace or support12,.raised, and the removable end pieces 10 put into osition, with thewires '9 extending in the s ots 12", in the upper edge of t-he brace orsupport 12," and .then the cap 14 moved down and fastened in place, tohold the wires or rods 9 in position. It will be understood that thedetails ,of construction of my improvements may be varied if desired.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is In a warp stop motion, the combinationmotion to bars extending in the direction of with a stand or braceadjustably secured in the direction of the length of the warp'stopthelength ofthe warp stop motion, and hav- I ing open end slots in itsupper edge-for the wires or rods which extend through open-' ings in thedrop devices, of a cap or bar hinged to said brace or stand, and adaptedto be raised at its free end, and means for securing its free end tosaid stand.

. J OHN REG-AN.

Witnesses JOHN C. DEWEY, MINNA HAAS.

